<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script type="text/javascript">
		window.onload=function () {
			p = document.getElementById('p');

			p1 = document.getElementById('p1')

			btn = document.getElementById('btn');

			son1 = document.getElementById('son1');

			btn.onclick= function(){

				// xbs = document.createElement('a');

				// xbs.href ="http//www.baidu.com";

				// xbs.innerHTML="百度一下";
				// 
				// newNode = son1.cloneNode(true);

				// p1.appendChild(newNode);

			}
		}
	</script>
</head>
<body>
	<button id="btn">按钮</button>
	<p id="p">
		<a id="son1" href="">学并思</a>
	</p>
	<p id='p1'></p>
</body>
</html>